Novel sealing oil nipple

Abstract

An oiling through hole is axially formed in an oil nozzle body, check rings are integrally connected to the positions, at openings in the two ends of the oiling through hole, of the oil nozzle body respectively, a steel ball and a compression spring are arranged in the oiling through hole of the oil nozzle body, and one end of the compression spring makes contact with the check ring at the lower end of the oiling through hole; the other end of the compression spring makes contact with the steel ball, and the steel ball can abut against a check ring at the upper end of the oiling through hole under the action of elasticity of the compression spring. A first external thread is arranged on the side surface of the upper part of the oil nozzle body; the cap is screwed at the first external thread of the oil nozzle body through the corresponding internal thread; second external threads are formed in the side face of the lower portion of the oil nozzle body. Compared with a traditional oil nipple, the novel sealing oil nipple is provided with a double-sealing protection structure, the sealing effect is better, air leakage and oil leakage can be prevented, the outside can be blocked, and sand and dust are prevented from blocking the oil nipple.

Description

Technical Field

[0001] The invention relates to a fuel filling nozzle, in particular to a novel sealed fuel filling nozzle. Background Art

[0002] The rotary reducer contains many moving parts, such as gears and bearings. These parts will produce friction and wear during operation. By regularly adding lubricating grease to the reducer, the normal operation of the various parts inside the reducer can be ensured and failures and damage caused by friction and wear can be prevented.

[0003] The usual practice is to install a refueling nozzle on the body of the reducer and regularly add lubricating grease to the inside of the reducer through the refueling nozzle. However, the sealing performance of the traditional refueling nozzle is not good enough, and lubricating grease will leak at the refueling nozzle after long-term use. Summary of the invention

[0004] In view of the content in the background technology, the present application provides a new sealed fuel nozzle, which has the effect of double sealing protection and excellent sealing performance.

[0005] A new sealed oiling nozzle is disclosed, which comprises an oiling nozzle body, a steel ball, a compression spring and a cap;

[0006] The oil nozzle body is axially provided with a refueling through hole, and the oil nozzle body is integrally connected with retaining rings at both end openings of the refueling through hole. The steel ball and the compression spring are arranged in the refueling through hole of the oil nozzle body, and one end of the compression spring contacts the retaining ring at the lower end of the refueling through hole, and the other end of the compression spring contacts the steel ball. Under the action of the elastic force of the compression spring, the steel ball can contact the retaining ring at the upper end of the refueling through hole, so as to realize the first sealing protection. When lubricating grease needs to be added, the steel ball can be pushed open;

[0007] The upper side surface of the nozzle body is provided with a first external thread, and the cap is screwed onto the first external thread of the nozzle body through its corresponding internal thread, thereby achieving a second level of sealing protection;

[0008] The lower side surface of the oil nozzle body is provided with a second external thread, and the oil nozzle body is installed on the body of the reducer through the second external thread.

[0009] Furthermore, a rubber gasket is fixedly provided on the inner top surface of the cap. When the cap is tightened onto the upper part of the nozzle body through the internal thread and the first external thread, the rubber gasket can contact the upper end surface of the nozzle body, thereby improving the second-level sealing protection effect. The steel ball will not protrude from the upper end surface of the nozzle body under the squeezing of the compression spring force, that is, when the cap is tightened, the steel ball will not be pushed away to render the first-level sealing protection ineffective.

[0010] Preferably, the second external thread of the nozzle body is an extended tapered pipe thread, and the specific model and specification is 1 / 8-27NPTF. Such a second external thread has better sealing performance and avoids leakage at the installation location of the nozzle body.

[0011] Furthermore, a hexagonal block is integrally connected to the middle of the oil nozzle body, and the hexagonal block is used to fit a wrench to facilitate the screwing installation of the oil nozzle body.

[0012] Preferably, the outer surface of the cap is provided with anti-slip grooves to prevent slipping when tightening the cap.

[0013] Through the above technical solution, the present invention at least includes the following beneficial effects:

[0014] Compared with traditional fueling nozzles, the new sealed fueling nozzle described in the present application has a double sealing protection structure, which has a better sealing effect, can prevent air and oil leakage, and can also block the outside world and prevent sand and dust from clogging the fueling nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the structures related to the present invention.

[0016] Figure 1 A partial cross-sectional view of a novel sealed fueling nozzle described in an embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the structure of the nozzle body described in the implementation manner of the present application. DETAILED DESCRIPTION

[0018] In the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship are only used for exemplary description and cannot be understood as limiting this patent; if there are terms such as "first", "second", etc., they are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the said features. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] refer to Figure 1 and Figure 2 A novel sealed oiling nozzle, comprising an oiling nozzle body 1, a steel ball 2, a compression spring 3 and a cap 4;

[0021] The oil nozzle body 1 is axially provided with a refueling through hole 101, and the oil nozzle body 1 is respectively integrally connected with retaining rings 102 at both end openings of the refueling through hole 101. The steel ball 2 and the compression spring 3 are arranged in the refueling through hole 101 of the oil nozzle body 1, and one end of the compression spring 3 contacts the retaining ring 102 at the lower end of the refueling through hole 101, and the other end of the compression spring 3 contacts the steel ball 2. Under the action of the elastic force of the compression spring 3, the steel ball 2 can contact the retaining ring 102 at the upper end of the refueling through hole 101, so as to realize the first layer of sealing protection, and when it is necessary to add lubricating grease, the steel ball 2 can be pushed open;

[0022] The upper side surface of the nozzle body 1 is provided with a first external thread 103, and the cap 4 is screwed onto the first external thread 103 of the nozzle body 1 through its corresponding internal thread 401, thereby achieving a second level of sealing protection;

[0023] The lower side surface of the nozzle body 1 is provided with a second external thread 104 , and the nozzle body 1 is mounted on the body of the reducer through the second external thread 104 .

[0024] Compared with traditional fueling nozzles, the above-mentioned new sealed fueling nozzle has a double sealing protection structure, which has a better sealing effect, can prevent air leakage and oil leakage, and can also block the outside world and prevent sand and dust from clogging the fueling nozzle.

[0025] In this specific implementation:

[0026] A rubber gasket 5 is fixedly arranged on the inner top surface of the cap 4. When the cap 4 is tightened to the upper part of the nozzle body 1 through the internal thread 401 and the first external thread 103, the rubber gasket 5 can contact the upper end surface of the nozzle body 1, so that the effect of the second layer of sealing protection is better; the steel ball 2 will not protrude from the upper end surface of the nozzle body 1 under the squeezing of the elastic force of the compression spring 3, that is, when the cap 4 is tightened, the steel ball 2 will not be pushed away to make the first layer of sealing protection invalid.

[0027] The second external thread 104 of the nozzle body 1 is an extended tapered pipe thread, and the specific model and specification is 1 / 8-27NPTF. Such a second external thread 104 has better sealing performance and avoids leakage at the installation location of the nozzle body 1.

[0028] A hexagonal block 105 is integrally connected to the middle of the nozzle body 1 , and the hexagonal block 105 is used for fitting a wrench to facilitate the screwing installation of the nozzle body 1 .

[0029] The outer surface of the cap 4 is provided with anti-skid patterns to prevent the cap 4 from slipping when being tightened.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Based on the present invention and the above description, relevant personnel can make various changes and modifications without departing from the technical idea of ​​the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of sealed oiling nozzle, characterized by: It comprises a nozzle body (1), a steel ball (2), a compression spring (3) and a cover cap (4); The oil nozzle body (1) is axially provided with a refueling through hole (101), and the oil nozzle body (1) is integrally connected with retaining rings (102) at both end openings of the refueling through hole (101), and the steel ball (2) and the compression spring (3) are arranged in the refueling through hole (101) of the oil nozzle body (1), one end of the compression spring (3) is in contact with the retaining ring (102) at the lower end of the refueling through hole (101), and the other end of the compression spring (3) is in contact with the steel ball (2), and under the action of the elastic force of the compression spring (3), the steel ball (2) can contact the retaining ring (102) at the upper end of the refueling through hole (101); The upper side surface of the nozzle body (1) is provided with a first external thread (103), and the cap (4) is screwed onto the first external thread (103) of the nozzle body (1) through its corresponding internal thread (401); A second external thread (104) is formed on the lower side surface of the nozzle body (1).

2. A new sealed oil filling nozzle according to claim 1, characterized in that: A rubber gasket (5) is fixedly arranged on the inner top surface of the cover cap (4); when the cover cap (4) is tightened on the upper part of the nozzle body (1), the rubber gasket (5) can abut against the upper end surface of the nozzle body (1), and the steel ball (2) will not protrude from the upper end surface of the nozzle body (1) under the compression of the elastic force of the compression spring (3).

3. A new sealed oil filling nozzle according to claim 1 or 2, characterized in that: The second external thread (104) of the nozzle body (1) is an extended tapered pipe thread.

4. A new sealed oil filling nozzle according to claim 1 or 2, characterized in that: A hexagonal block (105) is integrally connected to the middle portion of the nozzle body (1).

5. A new sealed oil filling nozzle according to claim 1 or 2, characterized in that: The outer surface of the cover cap (4) is provided with anti-slip grooves.

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